CVE-2026-44475 Ella Core: UE Security Capability bypass on NGAP PathSwitchRequest
A malicious gNB can bypass security checks by overwriting UE security capabilities in Ella Core via crafted PathSwitchRequest messages.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-44475?
CVE-2026-44475 is a medium-severity missing authorization vulnerability in ellanetworks core, published on 27 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Ella Core is a 5G core designed for private networks. Prior to 1.10.0, Ella Core does not verify the UE Security Capabilities received in NGAP PathSwitchRequest messages against its locally stored values. A malicious gNB can overwrite Ella Core's stored UE security capabilities for any UE with arbitrary values by sending a single crafted PathSwitchRequest. This vulnerability is fixed in 1.10.0.
Weakness: CWE-358
Which versions are affected by CVE-2026-44475?
3 open source packages ship an affected version, including github.com/ellanetworks/core.
| Package | Affected | Fixed in |
|---|---|---|
github.com/ellanetworks/core Go | All versions | 1.10.0 |
github.com/ellanetworks/core Go | All versions | 1.10.0 |
github.com/ellanetworks/core Go | All versions | 1.10.0 |
How do I fix CVE-2026-44475?
Upgrade github.com/ellanetworks/core to 1.10.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-44475 being exploited?
There is no known exploitation of CVE-2026-44475 in the wild and no public exploit code.
Sources
Also known as GHSA-pwfh-mqp3-pqwj, GO-2026-5554.